linux-kernel - Re: [PATCH 4/6] cpumask: switch over to cpu_online/possible/active/present

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Message-Id: <20081201224739.958b3942.akpm@linux-foundation.org>
Date:	Mon, 1 Dec 2008 22:47:39 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Rusty Russell <rusty@...tcorp.com.au>
Cc:	linux-kernel@...r.kernel.org, Mike Travis <travis@....com>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH 4/6] cpumask: switch over to
 cpu_online/possible/active/present_mask: core

On Mon, 1 Dec 2008 18:47:38 +1030 Rusty Russell <rusty@...tcorp.com.au> wrote:

> + *     cpu_active_mask  - has bit 'cpu' set iff cpu available to migration

I completely missed the addition of cpu_active :(

It isn't completely clear to me why this exists.  Are the various state
transitions documeted anywhere?

<looks at the changelog>

It says "This is based on Linus' idea of ...", but it doesn't actually
describe that idea.  bah.

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